65 lines
1.8 KiB
HTML
65 lines
1.8 KiB
HTML
<!--
|
|
Copyright (c) 2019 The Khronos Group Inc.
|
|
Use of this source code is governed by an MIT-style license that can be
|
|
found in the LICENSE.txt file.
|
|
-->
|
|
|
|
<!DOCTYPE html>
|
|
<html>
|
|
<head>
|
|
<meta charset="utf-8">
|
|
<title>WebGL Behavior After Alert and Read Pixels Test</title>
|
|
<link rel="stylesheet" href="../resources/js-test-style.css"/>
|
|
<script src="../../devtools/src/debug/webgl-debug.js"></script>
|
|
<script src="../js/js-test-pre.js"></script>
|
|
<script src="../js/webgl-test-utils.js"></script>
|
|
</head>
|
|
<body>
|
|
<canvas id="canvas" width="100" height="100"> </canvas>
|
|
<div id="description">Verify WebGL behavior after an alert and then a readPixels()</div>
|
|
<div id="console"></div>
|
|
<script>
|
|
"use strict";
|
|
|
|
function checkPixels(buf, width, height, thresh) {
|
|
for (var yy = 0; yy < height; ++yy) {
|
|
for (var xx = 0; xx < width; ++xx) {
|
|
var offset = (yy * width + xx) * 4;
|
|
if (Math.abs(buf[offset] - 255) > thresh ||
|
|
Math.abs(buf[offset + 1] - 0) > thresh ||
|
|
Math.abs(buf[offset + 2] - 0) > thresh) {
|
|
testFailed("Checking pixels");
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
testPassed("Checking pixels");
|
|
return true;
|
|
}
|
|
|
|
var wtu = WebGLTestUtils;
|
|
var gl = wtu.create3DContext("canvas");
|
|
gl.clearColor(1, 0, 0, 1);
|
|
gl.clear(gl.COLOR_BUFFER_BIT);
|
|
wtu.glErrorShouldBe(gl, gl.NO_ERROR, "setup should succeed");
|
|
|
|
wtu.checkCanvas(gl, [255, 0, 0, 255], undefined, 3);
|
|
|
|
alert("Click me to continue");
|
|
|
|
wtu.glErrorShouldBe(gl, gl.NO_ERROR, "setup should succeed");
|
|
wtu.checkCanvas(gl, [255, 0, 0, 255], undefined, 3);
|
|
|
|
alert("Click me to continue");
|
|
|
|
gl.clearColor(1, 0, 0, 1);
|
|
gl.clear(gl.COLOR_BUFFER_BIT);
|
|
wtu.checkCanvas(gl, [255, 0, 0, 255], undefined, 3);
|
|
|
|
debug("");
|
|
var successfullyParsed = true;
|
|
</script>
|
|
<script src="../js/js-test-post.js"></script>
|
|
|
|
</body>
|
|
</html>
|